Apparatus and method for driving laser diode for recording...

Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing for controlling recording light...

Reexamination Certificate

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Reexamination Certificate

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07417932

ABSTRACT:
An apparatus and method for driving a laser diode for a recording of data. According to the method, pre-stored variables corresponding to respective manufacturers and respective recording pits of the optical disk are checked. A main pulse based on the checked variables and a sub pulse having a prescribed width are generated. The sub pulse is generated at a prescribed time prior to generating the main pulse. A driving signal for driving a LD to record data is generated upon receiving the main pulse and the sub pulse. Therefore, data recording operations are performed using the driving signal without overpower as in the conventional Mode 1 (e.g., Orange 1), that can take less computation and less time to form recording pits at a desired time/size for a recording period of time as in the conventional Mode 2 (e.g., Orange 2), which can result in improve recording quality.

REFERENCES:
patent: 5732062 (1998-03-01), Yokoi et al.
patent: 6614739 (2003-09-01), Sasaki et al.
patent: 1276597 (2000-12-01), None
patent: 1 174 862 (2001-06-01), None
patent: 1 211 678 (2001-11-01), None
patent: 2001-067669 (2001-03-01), None
patent: 2001-344752 (2001-12-01), None

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